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IV. Complete the sentences with the correct comparative form of the adjectives in the box.
narrow cold important dangerous fast

21. It’s ....................... in the north of Viet Nam than in the south.
22. Is a snake ....................... than a dog?
23. Doing homework is ....................... than playing video games.
24. The streets in my neighbourhood are ....................... than in your neighbourhood.
25. Travelling by air is ....................... than travelling by bus.
V. Complete the sentences with the clauses in the box to make comparisons.